MANUFACTURED BY: |  | HUSQVARNA VAPENFABRIKS AB |
 | | HUSKVARNA, SWEDEN |
SERIES OR ASSEMBLY NUMBER: | | |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1978 |
YEAR DISCONTINUED: | | 1981 |
ENGINE DISPLACEMENT: | | 77cc (4.7 cu. in.) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 52mm (2.05 in.) |
PISTON STROKE: | | 36mm (1.42 in.) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | 4.6/3.4 hk.kW |
WEIGHT: | | 8.8 kg with 45 cm bar & chain |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | Mechanical |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast magnesium |
MAGNETO TYPE: | | Capacitor discharge |
CARBURETOR: | | Tillotson HS-205A, C series |
MAJOR REPAIR KIT: | | RK-23HS |
MINOR REPAIR KIT: | | DG-5HS/T |
AIR FILTER SYSTEM: | | Nylon mesh cartridge |
STARTER TYPE: | | Husqvarna automatic rewind |
OIL PUMP: | | Automatic, adjustable |
MAXIMUM ENGINE RPM: | | 8,500 |
IDLE RPM: | | 2,700 |
IGNITION TIMING: | | Mark on stator plate should align with mark on crankcase |
BREAKER POINT SETTING: | | none |
FLYWHEEL/COIL AIR GAP: | | 0.3 mm (0.012 in.) |
SPARK PLUG TYPE: | | Bosch WS7F or Champion CJ7Y |
SPARK PLUG GAP: | | 0.5mm (0.020 in.) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 800 ml |
FUEL OIL RATIO: | | 40:1 |
RECOMMENDED FUEL OCTANE: | | Regular automotive. ASPEN2 pre-mixed Alkylate fuel is best |
MIX OIL SPECIFICATION: | | Husqvarna Two-stroke chain saw mix oil or equivalent. ASPEN synthetic mix oil is best |
CHAIN PITCH: | | 3/8 in. |
CHAIN TYPE: | | Oregon 73LG or JG |
BAR MOUNT PATTERN: | | 01 link |
SHORTEST GUIDE BAR SUPPLIED: | | 40cm (16 in.) |
LONGEST GUIDE BAR SUPPLIED: | | |
COLOUR SCHEME: | | Husqvarna Orange enamel |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |